Shade-holder coupling.



No. 831,628. PATENTEDSEPT. 25, 1906. E. F. PIERCE.

SHADE HOLDER COUPLING.

APPLICATION FILED OOT.18,1905. RENEWED JUNE 11,1906.

UNITED STATES rEN'r OFFI E.)

EDWIN F. PIERCE, or MILWAUKEE, WISCONSIN. SHADE-HOLDER COUPLING-s To all whom it may concern:

Be it known that I, EDWIN F. PIERCE, a citizen of the United States, residing at the city of Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Shade-Holder Couplings, of which the following is a specification. My invention relates to improvements in devices for detachably coupling a shade to an incandescent-lamp fixture.

The object of my invention is'not provide a device which will hold a shade more securely in place, but one which will always hold it in exactly the same relative position to the lamp-fixture.

It is awell-known fact that when the shadesupporting collars are cou led with a lampfixture by screw-threaded earin s the parts are not always screwed up to .t eir proper seat, when owing to the'angle of the thread of the couplings the shades are sometimes left at an angle to the lamp-fixture, whereby such parts are not b'rou ht into their proper relative position to eac other, one side of the shade bein thereby brought nearer to the lamp than t e other, and is consequently heated more than the other side, when owin to the uneven ex ansion caused thereby the shade is liable to be broken,-'while by my device it is obvious that it will be impossible to attach the couplings together at all other-' wise than straight and in exactly the same relative position to each other, whereby the liability of the shade becoming accidentally detached or broken by heat is avoided.

The construction of my invention is exgained by reference to the accompanying awings, in which- Figure 1 represents a side view of the "several parts of my device in-connection with a lamp socket and shade as they appear when coupled together. Fig. 2-represents a side view .of the lamp-socket of an ordinary incandescentlamp. Fi 3 represents a side view of a couphng-cofiar removed from the socket. Fig. 4 represents the shade -su Fig. 5 represents-a si e view of the'part shown in Fig. 2 and the vertical section of the parts shown in Figs. 3 and 4, also coupled together.

e arts are represented by the same referenceetters throughout the several views.

" My invention comprises a socket A,' provided at a slight distance from its lower end Specification of Letters Patent. Application filed Gotcha- 1811905. Renewed June 11,

only to the bead B, and said as in 'cated in Figs.

Patented Sept. 25,1906. 1908. Serial No. 321,231.

with an annular bead B; a coupling-collarQ; provided upon its lower. side with a (plurahty of clamping-fingers D; a milled bea E, and .a shade-supporting bracket F, provided with a plurality of collipling-fingers G and shade- 6o retainin' screws The (fiameter of made slightly larger bead B, so that it. over said bead. the said several parts to ether, the couplingcollar 0 is first move over the bead B. When this'is done, the bracket F is placed upon the socket A. The fingers G of the bracket F are curved outwardlyat their centers, forming grooves I for the recefiption of fingers G are su ciently resilient to spring over said bead B as the bracket F is placed uponthe socket A. The fin ers D are provided on their inner sides grooves J for the reception of the beads K, formed on the exterior surface of the fingers The space between the fingers D correspond in number'with the fingers G, and when inserting the eral fin ers Gare brou ht beneath the coupling-colTar C, midway Between the fingers D thereof, -whereby .the res ective grooves J are caused to register wit the beads K of the fingers turned a artial revolution, whereby thegrooves J o the several fingers D are brought over and caused to bear .u on the several beads K ofthe fingers G, t ereby securely holdin said fingers G in lace upon and aroun the bead B ofthe soc et, whereby all of said parts are securely coupled to ether in their roper'relative position to eac other,

the coupling-collar O is than the diameter of the may be readily slipped ous to disengage the shade-supporting bracket F from the socket A, it is necessary simply to turn the couplin -collar 0 a partial rev lution on its contra axis in either direction, whereby the fingers D are again brought-out of en agement with the beads K of the fingers when said bracketF, with the shade, may be readily removed from the socket. The object of the chased bead E is to facili .tate turning the coupling-collar O in either direction w en desirous to couple the shade-.-. supporting bracket to or uncoupleit/fromthesocket 'A. The bracket F 1s, 'rovided with a luralit'y of screws H, by which the shade is secured thereto in the ordinary manner.

When desirous to couple bracket in place the sev-" G when the coupling-collar O is 5 1 and 5. When desir- L represents an incandescent lamp which is coupled tothe socket A in the ordinary manner. v t

. Having thus described myinventio'n, what I claim as new, and desire to secure by Letters Patent, is v v 1. The oombinationof a lamp-socket provided near one end with an annular bead; a detachable coupling-collar provided with a plurality of fingers each of which fingers is provided with an internal groove for engagement with a beadformed on the'shade-supporting bracket; a shade-su fpxorting' bracket provided with a plurality of gers being provided ntheir inner surfaces with grooves for engagement with an annular bead formed on the lamp-socket, .and on their exterior surfaces with beads for eng'agement with'the grooves formed on the inner surfaces of the fingers of the couplingcollar and means forsecuring a'shade to said bracket.

2. The combination of a lamp-socket provided near one end vwith an annular bead; a v

gers, said fins gers; said fingers being provided on;

their inner surfaces with grooves for. engagement with an; annularbead formed on the lam -socket, and ontheir exterior surfaces with beads forengagement with the ooves formed on the'inner surfaces of the v gers 'of' the coupling-collar and meansfor securing a shade to said bracket, all substantially as and for the purpose specified.

In testimony whereof I affix my signature.

in the presence of two witnesses v y EDWIN F. PIERCE;

".Witnesses: Q l

' JAs. BI ERWIN,

O; Eiawm. I 

